Electromechanical indicator.



P. P. MGAVINNEY.

ELEUTROMEUHANICAL INDICATOR.

APPLIOATION FILED 11130.21, 1910.

1,005,259, Patentegl Oct. 10; 1911.

3 SHEETS-SHEET l.

P. P. MQAVINNEY. ELEUTROMECHANIGAL INDICATOR...

APPLICATION FILED DEO.21,1910.

1,005,259.- Patented 0@1;.10,1911.

. 3 SHEETSSHBET Z.

P. P. MCAVINNEY- ELEUTROMEGHANIOAL INDICATOR. APPLICATION FILED nscfzl,1910.

1,005,259, Patent d 0ct.10,1911.

3SHEETS-SHEET 3.

extending down from the solenoid 17 on horizontal extension 80 whichextends under said core.

37 is a hub on the stud 22 similar to and behind the hub 20 and integralwith said hub 37 is a lever 38 exactly like the lever 27, and mechanism39, l0,-l1,42 and 1?) corresponding exactly to the mechanism 28, 30, 31,82 and 38, the dog 12 being pivotally connected at 4 1 to the core 45 ofthe solenoid on the left side of the mechanism. See Figs. 1 and 4. Theouter end of the lever 38 is formed with an extension 410 which extendsunder the core 115-. The toothed end 4-7 (Figs. 1 and 3) of aspringlatch whose shank :8 is held slidingly in a holder 49 supportml bythe case, is held normally in engagement with the gear-wheel 25 by thespring 50 in the chamber 51 in said holder.

Mounted on the upper surfaces of the two levers 27 and 38 are blocks 59and 53 respectively made of fiber or other non-conductive material, andresting on the blocks 52 and respectively are metallic contact-blocks 5and connected by springs 50 and 57 with a central metallic block 58mounted on a block of insulation 59 secured to the back plate. Thisconducting block 58 is connected by the negative wire 00 which passesunder the binding-post 61 on the block of insulation 2 secured to theback plate, to the source of electricity. Mounted on blocks ofinsulation 03 and (54: respectively on 0pposite sides of the ccnter'ofthe back plate of the case are metallic stop-blocks 05 and ('16 locateddirectly above the metallic blocks 54 and The diagrammatic portion ofFig. 1 illustrates an electro-uuignetic controller on general lines withthat illustrated in the application -i'or vLetters Patent above referredto.- 07 represents the positive wire connecting the source ofelectricity with the bindingpost 08 which is connected by the wire 09with the magnet 70. which is connected by a wire 71. with thebinding-post 72 connect-- ed by a metallic spring 78 with a metallicroll 74 which bears against a metallic ring 75 on the core of themagnet. in contact with this ring is a metallic roll. 77 connected by ametallic spring ing-post? 79 which is connected by a wire 80 with aninsulated stud 83. A commutator 82 has four brushes 81, 8 1, 85 and 88hearing on its surface. the brush 81 being coimected by the wire 86 withtl' right solenoid. and the brush 84 being connected by the wire 89 withtile left. solenoid. Pivotcd on the stud 83 is a two-way switch 92having a. central projection 93 and contact wings 94, 95. A cam 96 ofinsulation material provided with p jections 97 and 98 is adapted to bere- 78 with. a bindt l l 'in any suitable tated in either direction.Contact-blocks 99 and 100 provided with contact-springs 101 and 102extend on opposite ends of the cam 90, the block 99 being connected bythe wire 103 with the brush 88 on one side of the metallic plate 91making a part of the commutator, and the block 100 being connected by awire 10-11 with the brush 85 on the other side of the plate 91.

When by the action of. the motor which controls the gate-valve, saidmotor being mechanically connected with the controller manner, thecommutator 82 and cam 90 are moved toward the left, an electricalcircuit'is established through the wire 67. binding-post 68. wire 69,magnet 70, wire 71, binding-post 72. spring 73, roll 74:, ring 75, roll77, spring 78, binding-post 79, wire 80, stud 83, switch 92, spring 101,block 100, wire 10-t, brush 85, metallic plate 91, brush 81, and wire 86to the right solenoid, connection also being made by the wire 87 (asabove mentioned) with the metallic block 05. and through the wire 105(Fig. 1) to the wire 60. The eiiect is to energize the right solenoid 17and draw up the core or plunger 35. lifting the outer end of the dog :32and swinging its toothed end into engagement with the gear-wheel 25against the power of the spring 33. By means of the pivot 31 the outerend of the lever 27 is raised from its seat on the stop 30, swinging themetallic block 54 up into engagement with the metallic block 65, andthus complcting the electrical circuit through the blocks 05 and 5-1,the spring 59, the block 58 and the negative wire 60:

.lhould the commutator 82 be rotated toward the right thus bringing themetallic plate 91 into contact with the brushes 84 and 88. the currentwould pass through the wire 07. binding-post 08, wire 69, magnet 70.wire 71, binding-post 72, spring 73, metallic roll 7 1, metallic ring75, metallic roll. 77. spring 78, binding-post 79, wire 80, stud switch92, spring 102, block 99, wire 103, brush 88, plate 91.,brush 84:, andwire 89, to the left solenoid 1.7, t e wire 89 being (as above stated)connectit wire 90 with the metallic block 66; and said solenoid beingconnected by the wire 106 to the wire 00. The effect would be to energive the left, solenoid, lift the core 45 and the outer end of the dog42 bringing its toothcd end into engagement with the gearwheel 25against-the power of the spring 43, and by means ot the pivot 41 liftthe outer end of the lever 38 oh itsseat on the stop 40, bringing themetallic block up into engagement with the block 60. thus cornpletingthe electrical circuit tl'arough the hloelts 00 and 95, the spring 57,the block 58, and the negative wire 00. Thus the gear-wheel 25 isrotated by either the dog 32 or the dog 7 a by the suitable controllerand provided with slidclosed, rotation being communicated from saidgear-wheel 25 through the pinion 23 to the gear-wheel 20, and by meansof the pivot 19 to the indicating hand 21.

The, springs 28 and 39 are of course for the purpose of returning thelevers 27 and 38 to their original positions. The projecting portions 36and enable the levers 27 and 38 to limit the downward movement of thecores 35 and thus preventing the toothed. end of either dog tronswinging too far away from the gear-wheelflfi. The spring-latch l7, 48holds the gear-wheel in position but retracts and slips over its teethwhen the wheel is actuated by either of the dogs 32 and 4:2.

lt sltiould be understood that the indioator adapted to be operated inconnection with any si'i'itahle controller, the one illustrated idiagrannnatieally simply serving to show one form of controller ada'itod for the pur pose.

Having thus fully described my invei'ition, what I claim and desire tosecure by Letters Patent, is:

it ln an tilttfflOdllQflllfll]lCill, indicator of the character descriled a pair 0'? solenoids adapted to he electrically minneeted with asuitable controller and pror i with slid- I ing cores, a dial andpointer, a train of gearl ing; for conui'iuuieating movement to thepointer with relation to the dial, a pair of levers whose hubs turn on asul'islantially central stud the outer ends oi said. levers tendingtoward the cores of the two solw holds and held iuirnially outward to alimited extent by springs, a pair of dogs pivot ally connected at theirouter ends lo the cores and 'iivotally sup 'iorled by the lovers: theinner ends of said dog's being held norinfill away 'roin one of thegeanwluels in the train, a substantially central insulated block,metallic springs extending: outward from said block towa l the oppositecores and'substantially parallel with the low contact-blocks mounted onthe outer ends said springs and resting on liloeh'r-i of insulation onthe levers, metallic insulated liars beyond said (10Hlutti'dilUChS fromthe levers, and a svstci'n of wiring illfillllllll lf the moiiallie hareand the solcnoi'. iuo adapteo to extend to the couirollm' wherchv wheneither solenoid is euerghwd and the core lhcreo'li' thus drawn into thesolenoid the lever on that side is drawn with the core bringing, the dogon that. side into engagement with the gen and the emitaot-hloclt sup'iorted by the spring on that side makes electrical con tact with thehair on the same side, tor the purpose set forth.

2. in an eleotroaneeliaiiical indioator oi? the character described, apair oi solenoids adapted to be electrically connected with a ing coresan indicating mechanism, a pair.

of levers pivotally connected. at their inner ends to the ease and.extending outward tow rd the cores of the two sol molds, a pair of dogspivotally connected at their outer ends to the cores and pivotallysi'ipported by the levers, a. substantially central insulated block,netallie springs extending; outwird from said block toward the ooresrContact blocks mounted on the outer ends of and springs and. insulatedfrom th levers, .uie-- tallic insulated bars beyond iid contactloloeksfrom the lovers, and. a system of wiring which includes the metallicbare and the solenoids and is adapted to extend to the controllerwherehy the energination of either solenoid drawing the core thereofinto it brings the dog on that side into ei'igageinent with theindicating mechanism operating the same and the contact-block supportedhe the sprin on said side makes eieetrisral with the bar on that side,for the purtaol pose set forth.

in an eleot'ronieehaineal indiedior of the character described a pairoil solenoids adapted to he eleetri ally connected w'tl, a. suitablecontroller and provided with A. gr

! cores, a dial and piilllil', a train of geariu l'oi' (:onuuunicatingrmovement to ll 1 pointer with relation to the diah a pair of leieri-iwhose liuhs turn on a substantially cent stud. the outer ends of saidlevers catenu' towa'id the canes oi the two solenoids ani hel d normallyoutward to a limited extent springs, a pair oi do pivotalt ounceteatheir outer end to {lit-i eores and piviiua rind lay l he lever (heinner owls oi said held ni'u'inall v a ay from one of gear-wheels i 1the train and dupliea e mechanisms insnv ted from the l one which is adelectrical le ers eitliauted to he hz'ou rlrrnit i th 'lli fi aoieiioidon :ha'i; in 1., i F Wu, My in. in mo. oour: wane-u producing; awithdrawal ol' the core and a movement oi iii-a lever on that sidewlna'eh ts dog is enp cd with the said i era in oi? gear mg.

l. in an elect; ueehai'iieul indicator oi? the character When pair ofeoleuoi la adapted to he cleetr'cal) i neeted with a suitable eontrollerand provided "witl'i sliding cores, a dial and pointer a train of ar ingfor eonnuunu-aling movement to the pointer with relation to the dial apair of of the gear-wheels in the train, and

(luplirate mechanisms insulated from the lovers either one of which isndaptvd to be brought into electrical circuit with the solenoid on thatside by the energization of such solenoid producing a withdrawal of thecore and a movement of the lever on that side whereby its dog is engagedwith the said train of gearing.

In testimony whereof I have signed my PATRICK F. MGAVINNEY. I

\Vitnes'ses HENRY W. \VILLIAMS, M. A. ATwoon.

